Studies on Mn2+ doped ZnS nanocrystals for photonic crystals application

Mn doped ZnS is a semiconductor that can exhibit good quality in their properties due to the wider band gap. In this present work, sol gel method with self assembled technique were used to perform a good quality of ZnS:Mn nanocrystals layer depend on the different of doping concentration. The nanocrystals of the prepared Mn doped ZnS have been analyzed using Field Emission Scanning Electron Microscopy (FESEM), Photoluminescence (PL) and UV-Vis spectrophotometer. The appearance of the nanocrystals from FESEM micrograph was smooth and homogenous with the average size was measured around 25 nm. From the measurements of transmittance of the films, the bandgap increases with the increase of Mn concentration same as the PL performance. Based on these properties that were obtained from nanocrystals layer, it is suitable and has tendency to use in photonic crystals applications.